iimveliso

I-HDPE eludongeni oluphindwe kabini lombhobho wezinto eziluhlaza,
I-HDPE yokuvelisa umbhobho otyatyiweyo kabini eludongeni, Loluphi uhlobo lwe-resin ye-HDPE esetyenziselwa udonga oluphindwe kabini lombhobho,

HDPE udonga oluphindwe kabini umbhobho wemali ekrwada

1. Ukubunjwa kwemathiriyeli ekrwada: Izinto eziluhlaza ze-PE-double-bellows ze-PE zihlala zenziwe nge-polyethylene, imathiriyeli eyongeziweyo kunye ne-pigments.Ukuba izinto eziluhlaza zimanzi, ukuze kuphuculwe ukusebenza kakuhle kwemveliso, i-defoamer efanelekileyo inokongezwa.

I-2, iimfuno zokusebenza kwezinto eziluhlaza: indlela yokuvelisa ixabiso eliphantsi, i-bellows esemgangathweni ophezulu, ubukhulu becala kuxhomekeke ekukhethweni kwezinto eziluhlaza kunye nokuhlanganiswa kwefomula.

Iimfuno eziqhelekileyo zokusebenza kwe-polyethylene (PE) ziquka i-melt flow rate (MFR), ixesha lokungeniswa kwe-oxidation (OIT) kunye nobuninzi.Ubungakanani besantya sokunyibilika bubonisa ubungakanani bobunzima bemolekyuli.Ngokubanzi, imathiriyeli enezinga eliphezulu lokunyibilika lokunyibilika kulungele ukusetyenzwa kunye nokwenza, kwaye inokuphucula ukusebenza kakuhle kwemveliso.Nangona kunjalo, ayinakuba nkulu kakhulu, enempembelelo enkulu ekuqineni kweringi.Kufanelekile ukukhetha phakathi kwe-0.8-1.5g/10min(190℃, 5kg).Ixesha lokungeniswa kwe-oxidation limisela ixesha lomonakalo we-oxidation.Kwimibhobho efuna iminyaka engama-50 yokusetyenziswa, ukulawula ixesha lokungeniswa kwe-oxidation yezinto eziluhlaza ngundoqo wokuqinisekisa ubomi benkonzo ye-50 iminyaka.Kucaciswe ngokucacileyo kwi-GB/T19472.1-2004 ukuba ixesha lokungeniswa kwe-oxidation yezinto eziluhlaza ze-bellows kufuneka zibe ≥20min (200℃).Kwi-polyethylene ephakathi kunye nephezulu, iipropati zayo zinokuhlengahlengiswa ngokutshintsha ubuninzi.Kuba siyazi ukuba ingxinano ephantsi ye-polyethylene inokwandisa ixesha layo lokungaphumeleli.

Ibakala lombhobho we-HDPE linokusabalalisa okubanzi okanye kwe-bimodal ubunzima be-molecular.Inoxhathiso oluqinileyo lwe-creep kunye nokulinganisela okulungileyo kokuqina kunye nokuqina.Yomelele kakhulu kwaye ine-sag ephantsi xa isenziwa.Imibhobho eveliswa kusetyenziswa le resin inamandla amahle, ukuqina kunye nokumelana nempembelelo kunye nepropathi egqwesileyo ye-SCG kunye ne-RCP.

I-resin kufuneka igcinwe kwindawo yokugcina impahla, eyomileyo kwaye kude nomlilo kunye nelanga elithe ngqo.Akufunekanga ifunjwe kwindawo evulekileyo.Ngexesha lokuthutha, izinto eziphathekayo akufanele zibekwe kwilanga elinamandla okanye imvula kwaye akufanele zihanjiswe kunye nesanti, umhlaba, isinyithi esilahliweyo, amalahle okanye iglasi.Uthutho kunye nezinto eziyityhefu, ezidlekayo nezinokutsha akuvumelekanga ngokungqongqo.

Isicelo

Inqanaba lombhobho we-HDPE lingasetyenziselwa ukuveliswa kwemibhobho yoxinzelelo, njengemibhobho yamanzi ecinezelekileyo, imibhobho yegesi yepetroli kunye neminye imibhobho yoshishino.Isenokusetyenziswa ukwenza imibhobho engacinezelekiyo njengemibhobho etyatyiweyo enodonga oluphindwe kabini, imibhobho yodonga olunomngxuma, imibhobho yesilicon-core, imibhobho yokunkcenkceshela yezolimo kunye nemibhobho edityanisiweyo ye-aluminiyamplastics.Ukongeza, nge-extrusion esebenzayo (i-silane cross-linking), ingasetyenziselwa ukuvelisa imibhobho ye-polyethylene edibeneyo (PEX) yokubonelela ngamanzi abandayo nashushu.